Omar Villafranca, NBCDFW
A sign in Southlake says "Unsure when we'll be open, but call for a personal appointment."
The power was out at Southlake Town Center for about two hours Thursday afternoon.
Electric service went out at about 3 p.m. to an estimated 670 customers because of a blown transformer.
Southlake Town Square management offices said most, if not all, of their stores and office complexes, were affected by the outage.
The temperature between 3 p.m. and 4 p.m. was about 103 degrees.